Generator Automatic Voltage Regulator AVR GRTA-20
GRTA-20
Quantity:
Generator AVR Automatic Voltage Regulator AVR GRTA-20
Input
- Sensing voltage: 170-300 VAC / 320-600 VAC (selectable via input terminals)
- Supply voltage: 170-300 VAC
- Frequency compatibility: 50/60 Hz (selectable)
Output
- Excitation voltage: 76.5 Vdc - 135 Vdc
- Excitation current: 7 Adc (continuous)
Regulation
- Steady-state voltage regulation: ≤ ±1% RMS (standard engine governing)
- Under-frequency (U/F) protection: 50 Hz or 60 Hz selectable
- Analog auxiliary input: ±3V, ±5V, ±10V DC (selectable via jumper)
- Voltage adjustment: On-board potentiometer (Vad)
Protection
- Under-frequency (U/F) protection
- Sensing fault protection
- Over-excitation protection
- Short-circuit current limitation
Environment
- Operating temperature range: -40°C to +60°C
- Compliance: RoHS compliant
Additional Features
- Designed for synchronous generators with excitation current up to 7A
- Analog input selectable via jumper
- Parallel operation capability
- Compatible with brushless synchronous alternators



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